In many ways, the Apple Newton was John Scully’s legacy at Apple. When Steve Jobs returned after the NeXT aquisition, Newton was a pet project platform 20 years ahead of its time. If you haven’t seen Love Notes to Newton you should watch it!
Notwithstanding the issues Apple faced building their next-generation Operating System (which NeXTSTEP would ultimately become), on his return Steve Jobs saw an undisciplined company with too many product lines.